Quotables
"What, sir, would you make a ship sail against the wind and currents by lighting a bonfire under her deck? I pray you, excuse me, I have not the time to listen to such nonsense."
Napoleon Bonaparte ; When told of the Robert Fulton steamboat
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7180206 | System for voltage stabilization of power supply lines The invention relates to a voltage stabilization system for power supply lines, comprising a variable inductance, an autotransformer and a system for controlling the variable inductance to automatically compensating for voltage variations of the power supply lines. ... | 02/20/2007 |
| 7061356 | Controllable transformer A controllable transformer device comprising a body of a magnetic material, a primary winding wound round the body about a first axis, a secondary winding wound round the body about a second axis at right angles to the first axis, and a control winding wound round t... | 06/13/2006 |
| 6147476 | Two quadrant magamp regulator control circuit with fast dynamic response and full holdoff capability A magamp circuit including a saturable reactor for regulating the output energy delivered to a load and having a protective circuit for restricting energy flow to the load in the event of occurrence of a short-circuit at the load. Output energy fluctuatio... | 11/14/2000 |
| 5672963 | Variable induction control led transformer An operator controllable transformer having a variable inductor with a control coil is provided. The transformer includes phase control circuitry to control the output of the transformer by phase controlling current flow in the control coil, thereby contr... | 09/30/1997 |
| 5477131 | Zero-voltage-transition switching power converters using magnetic feedback A soft-switching circuit for achieving zero-voltage-transition (ZVT) type commutation in switching power converters includes a magnetic feedback circuit for achieving substantially zero voltage turn on of the active power switches and for achieving zero v... | 12/19/1995 |
| 5363035 | Phase controlled transformer An operator controllable transformer having a shunt magnetic path with a control coil is provided. The transformer includes phase control circuitry to control the output of the transformer by phase controlling current flow in the shunt coil, thereby contr... | 11/08/1994 |
| 5187428 | Shunt coil controlled transformer A transformer having a shunt magnetic path and a shunt coil is provided. The transformer includes control circuitry to control the output of the transformer by controlling current flow in the shunt coil, thereby controlling the flux through the shunt magn... | 02/16/1993 |
| 4994685 | Regulated power supply and method The subject invention is a power supply comprising a magnetic amplifier, filter, back-up battery, switch-over regulating circuit and error amplifier. The magnetic amplifier receives a plurality of AC pulses and controls the pulse width of the pulses. The ... | 02/19/1991 |
| 4949235 | Magnetic amplifier shutdown circuit A power supply (100) for producing a regulated output DC voltage from an AC voltage source (12) having at least one phase (14); a fullwave rectifier (16) coupled to the AC voltage source for producing a rectified output voltage potential, the fullwave rec... | 08/14/1990 |
| 4862059 | Ferroresonant constant AC voltage transformer Primary and secondary windings of each transformer in a three-phase system each form a pair of independent windings, the first winding of each of the primary and secondary pairs formed on the iron core of one of the transformers and the second winding of ... | 08/29/1989 |
| 4837497 | Variable transformer, reactor and method of their control A variable transformer, reactor having a core combining at least two complete core elements wiht a common yoke; primary winding divided into two independently fed sets of phase coils wound in opposite direction, arranged on symmetrical legs of core elemen... | 06/06/1989 |
| 4460955 | Stabilizing power supply apparatus A stabilizing power supply apparatus including, as a switching element, a magnetic amplifier supplied with a rectangular wave voltage produced by an inverter and controlled by a reset current. An error sensing circuit senses a difference between the outpu... | 07/17/1984 |
| 4375077 | Power supply regulator circuit employing a transformer having a control winding A circuit for regulation of a D.C. output voltage in a switching power supply. The circuit contains a control transformer having primary, secondary and control windings. The output of the circuit is connected from the primary and secondary windings and is... | 02/22/1983 |
| 4339792 | Voltage regulator using saturable transformer A voltage regulator using a saturable transformer comprises a transformer having a primary and secondary windings, an AC power source for supplying the primary winding a fluctuating alternating current, and a rectifier connected to the secondary winding f... | 07/13/1982 |
| 4327348 | Variable leakage transformer A variable leakage transformer or a variable voltage transformer comprising a magnetic core with a main-magnetic path and a sub-magnetic path, the main magnetic path having at least a common magnetic path with the submagnetic path, a primary winding wound... | 04/27/1982 |
| 4308495 | Transformer for voltage regulators A transformer for voltage regulators has a first core provided with four legs and two common base plates, which are magnetically joined to the four legs, with an input winding being wound on the first and second legs, an output winding being wound on the ... | 12/29/1981 |
| 4305032 | Broad band saturable reactor regulated power supply A saturable reactor regulated power supply utilizes a power oscillator to convert line voltage to a higher frequency voltage. The high frequency voltage is passed through the gate windings of a saturable reactor to an output circuit including an output po... | 12/08/1981 |
| 4288737 | Regulator-compensator control Disclosed is a voltage regulation-unbalanced voltage compensation control connected intermediate the supply and load of the polyphase system, the control including separately adjustable variable impedance elements provided by saturable core reactors for i... | 09/08/1981 |
| 4276591 | Programmable power regulating power supply A high power D.C. supply regulated for constant output power to be dissipated in varying loads such as encountered in cathode sputtering systems. A.C. input power is rectified to produce the desired D.C. The output D.C. voltage and load current are measur... | 06/30/1981 |
| 4270082 | Open-circuit shunt-regulated high-voltage circuit Shunt regulation for a high-voltage circuit including a ferroresonant transformer has control circuitry associated with a low-voltage control winding on the transformer, the control winding being magnetically coupled with the high-voltage secondary windin... | 05/26/1981 |
| 4177418 | Flux controlled shunt regulated transformer The output voltage of a transformer is regulated by controlling the flow of magnetic flux through a shunt core. The transformer includes a main core fabricated from U-I laminations and is arranged to form a substantially rectangular structure. A primary a... | 12/04/1979 |
| 4171510 | System for detecting output of controllable semiconductor device A system for detecting an output of a controllable semiconductor device includes a controllable semiconductor device, a magnetic amplifier to which an output of the semiconductor device is fedback to control the semiconductor device, and a monitor device ... | 10/16/1979 |
| 4135123 | Transformer control device The proposed transformer control device is based on the magnetization principle and includes a voltage comparator unit, intermediate amplifiers and power amplifiers. The introduction of an additional intermediate amplifier and the connection of the inputs... | 01/16/1979 |
| 4004215 | Alternating current voltage regulator including saturable inductor and means to block the current flow therethrough The invention relates to a voltage regulator for alternating current using a saturable core inductor as a control element for the voltage at the output of the regulator. Each half wave of the output voltage of the regulator is compared with a reference vo... | 01/18/1977 |
